|I would think it would be fine. I used malt vinegar (the nasty brown stuff) several times without any issues, and distilled malt vinegar (clear, nearly the same ughish smell as brown) fairly regularly when living in the UK. There was maybe a very faint smell when out of the washer, but no color issues, and no smell when dry (or subsequently peed on). If you find it too smelly, you could try adding it earlier in the cycle and see if you like the results any better. But unless it's waaaaay more acidic than white vinegar (usually about 5%, same as my bottle of apple cider vinegar) you should be fine.